%0 Report
%A d'Enterria, D.
%A Kluth, S.
%A Zanderighi, G.
%A Ayala, C.
%A Benitez-Rathgeb, M. A.
%A Bluemlein, J.
%A Boito, D.
%A Brambilla, N.
%A Britzger, D.
%A Camarda, S.
%A Cooper-Sarkar, A. M.
%A Cridge, T.
%A Cvetic, G.
%A Brida, M. Dalla
%A Deur, A.
%A Giuli, F.
%A Golterman, M.
%A Hoang, A. H.
%A Huston, J.
%A Jamin, M.
%A Kotikov, A. V.
%A Krivokhizhin, V. G.
%A Kronfeld, A. S.
%A Leino, V.
%A Lipka, K.
%A Makela, T.
%A Malaescu, B.
%A Maltman, K.
%A Marzani, S.
%A Mateu, V.
%A Moch, S.
%A Monni, P. F.
%A Nadolsky, P.
%A Nason, P.
%A Nesterenko, A. V.
%A Perez-Ramos, R.
%A Peris, S.
%A Petreczky, P.
%A Pich, A.
%A Rabbertz, K.
%A Ramos, A.
%A Reichelt, D.
%A Rodriguez-Sanchez, A.
%A Rojo, J.
%A Saragnese, M.
%A Sawyer, L.
%A Schott, M.
%A Schumann, S.
%A Shaikhatdenov, B. G.
%A Sint, S.
%A Soyez, G.
%A Teca, D.
%A Vairo, A.
%A Vos, M.
%A Waits, C.
%A Weber, J. H.
%A Wobisch, M.
%A Xie, K.
%T The strong coupling constant: State of the art and the decade ahead
%N arXiv:2203.08271
%M PUBDB-2022-01776
%M arXiv:2203.08271
%M FERMILAB-CONF-22-148-T
%P 130
%D 2022
%Z 130 pages, 82 figures. White paper submitted to the Energy Frontier 'Proceedings of the US Community Study on the Future of Particle Physics' (Snowmass 2021)
%X This document provides a comprehensive summary of the state-of-the-art, challenges, and prospects in the experimental and theoretical study of the strong coupling α<sub>s</sub>. The current status of the seven methods presently used to determine α<sub>s</sub> based on: (i) lattice QCD, (ii) hadronic τ decays, (iii) deep-inelastic scattering and parton distribution functions fits, (iv) electroweak boson decays, hadronic final-states in (v) e+e-, (vi) e-p, and (vii) p-p collisions, and (viii) quarkonia decays and masses, are reviewed. Novel α<sub>s</sub> determinations are discussed, as well as the averaging method used to obtain the PDG world-average value at the reference Z boson mass scale, α<sub>s</sub>(m<sup>2</sup><sub>Z</sub>). Each of the extraction methods proposed provides a 'wish list' of experimental and theoretical developments required in order to achieve an ideal permille precision on α<sub>s</sub>(m<sup>2</sup><sub>Z</sub>) within the next 10 years.
%K parton: distribution function (INSPIRE)
%K Z0: mass (INSPIRE)
%K mass: scale (INSPIRE)
%K final state: hadronic (INSPIRE)
%K strong interaction: coupling constant (INSPIRE)
%K p p: scattering (INSPIRE)
%K electron p: scattering (INSPIRE)
%K quarkonium: decay (INSPIRE)
%K strong coupling (INSPIRE)
%K deep inelastic scattering (INSPIRE)
%K electroweak interaction (INSPIRE)
%K lattice field theory (INSPIRE)
%F PUB:(DE-HGF)29
%9 Report
%R 10.3204/PUBDB-2022-01776
%U https://bib-pubdb1.desy.de/record/476534